Show simple item record  

dc.contributor.authorOughton, Sean
dc.contributor.authorMatthaeus, William H.
dc.contributor.authorDmitruk, Pablo
dc.contributor.authorMilano, L. J.
dc.contributor.authorZank, Gary P.
dc.contributor.authorMullan, D. J.
dc.date.accessioned2014-04-03T03:27:35Z
dc.date.available2014-04-03T03:27:35Z
dc.date.copyright2001-04-10
dc.date.issued2001
dc.identifier.citationOughton, S., Matthaeus, W. H., Dmitruk, P., Milano, L. J., Zank, G. P., …, Mullan, D. J. (2001). A reduced magnetohydrodynamic model of coronal heating in open magnetic regions driven by reflected low-frequency waves. The Astrophysical Journal, 551(1), 565.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/8605
dc.description.abstractA reduced magnetohydrodynamic (RMHD) description is employed to examine a suggestion made by W. H. Matthaeus and colleagues in 1999 that coronal heating might be sustained by a cascade of low-frequency MHD turbulence. Here RMHD simulations show that the low-frequency cascade to high transverse wavenumbers can be driven by an externally maintained flux of low-frequency propagating Alfvén waves, in combination with reflection caused by an inhomogeneous background medium. The simulations show that the suggestions made previously on the basis of a phenomenology are indeed realizable. In addition, the effect is seen to sensitively depend on the presence of reflection, as the background turbulence level needed to maintain the cascade can be sustained only when reflection is imposed. The steady level of turbulence is insensitive to the initial seed turbulence level (provided it is nonzero). Consequences of this model for realistic models of coronal heating in open field-line regions are discussed.en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoenen_NZ
dc.publisherUniversity of Chicago Pressen_NZ
dc.relation.ispartofApJ
dc.rights© 2001 The American Astronomical Society.en_NZ
dc.subjectMHDen_NZ
dc.subjectSunen_NZ
dc.subjectcoronaen_NZ
dc.subjectmagnetic fieldsen_NZ
dc.subjectturbulenceen_NZ
dc.titleA reduced magnetohydrodynamic model of coronal heating in open magnetic regions driven by reflected low-frequency wavesen_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.1086/320069en_NZ
dc.relation.isPartOfThe Astrophysical Journalen_NZ
pubs.begin-page565en_NZ
pubs.elements-id28203
pubs.end-page575en_NZ
pubs.issue1en_NZ
pubs.volume551en_NZ


Files in this item

This item appears in the following Collection(s)

Show simple item record